Write out the sum.
A. 1 + 2 + 3 + ... + n
B. n + 20
C. 21 + 22 + 23 + ... + (n + 20)
D. 20 + 21 + 22 + ... + (n + 20)
Answer: C
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Solve the problem. Assume all numbers are approximate unless otherwise stated or the number has been determined by a definition or counting process.The formula for finding the volume of a square pyramid is V = 
s2h, where the s is the side of the base and h is the height. Determine the volume of a 47 cm high pyramid with sides of length 33.45 cm.
A. 25,000 cubic cm B. 17,530 cubic cm C. 18,000 cubic cm D. 20,000 cubic cm
Give the value of the function in radians. Round to the nearest thousandth when necessary.sin-1 -0.4320
A. 2.695 B. 3.588 C. 2.018 D. -0.447
Find the quotient.-20.61 ÷ 4.5
A. -4.48 B. -0.458 C. -0.448 D. -4.58
Solve the problem.Which of the fractions 
or 
is proportional to 
?
A. The fraction 
is proportional to 
.
B. The fraction 
is proportional to 
.